CN100475697C - Method for hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system - Google Patents
Method for hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system Download PDFInfo
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- CN100475697C CN100475697C CNB2007100111485A CN200710011148A CN100475697C CN 100475697 C CN100475697 C CN 100475697C CN B2007100111485 A CNB2007100111485 A CN B2007100111485A CN 200710011148 A CN200710011148 A CN 200710011148A CN 100475697 C CN100475697 C CN 100475697C
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- double salt
- acid potassium
- boric acid
- calcium
- boracic acid
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Abstract
The invention discloses a method to synthesize boric acid potassium-calcium double salt through hexahydric system, which comprises the following steps: making potassium chloride, calcium hydrate and boracic acid as raw material; making water as dissolvent; adopting hydrothermal reaction within easy industrialized non-pollution; forming boric acid potassium-calcium double salt through dissolving, hydrating and dewatering potassium chloride, calcium hydrate and boric acid in hydrothermal medium; cooling; filtering; drying; circulating usage.
Description
Technical field
The present invention relates to a kind of method of synthetic boracic acid potassium calcium double salt, particularly relate to a kind of method of utilizing hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system.
Background technology
In recent years, China's boron industry has obtained certain development, but compares with developed country such as U.S., also is in the starting stage, also has some relatively distinct issues in the development and use of resource.The boron product processes falls behind, and comprehensive utilization of resources is poor.At present, the boron converted products also only limits to primary products such as " two boron ", and added value of product is low, deficiency in economic performance.The boron deep processed product of the U.S. has kind more than 300, and major part belongs to new high-tech product, and value-added content of product is very high.As being the derived product-boron nitride of raw material production with " two boron ", be the important source material of special cermacis, corrosion-and high-temp-resistant and superhard material, its product market price is about 500,000 yuan/ton.And the market value of its raw material borax has only 2000～4000 yuan at present.
Boron should transfer resources advantage to industrial advantage and economic advantages as early as possible as a resources advantage of China, thereby promotes rapid economy development.Forming as early as possible based on " two boron " product, is the industrial system of pillar with boron essence, deep processed product.Developing the boron intensive processing product high in technological content, that added value of product is high, performance is high is the main direction of industry development from now on.
According to chemical principle, based on the boric acid product, adopt the hydro-thermal synthetic technology, produce boron intensive processing product boracic acid potassium calcium double salt, do not pollute in the technological process, realize zero release, technological element of a product height, added value height, quality height, business economic is profitable, and is significant to the development and the technical progress of boron industry.
Summary of the invention
The object of the present invention is to provide a kind of method of utilizing hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system, this method is a raw material according to rule selective chlorination potassium, calcium hydroxide and the boric acid that basic metal cooperates with alkaline-earth metal, with water is solvent, forms boracic acid potassium calcium double salt by dissolving, hydration and the dehydration in the hydro-thermal medium of Repone K, calcium hydroxide and boric acid.
The objective of the invention is to be achieved through the following technical solutions:
The method of hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system, this method is a raw material with Repone K, calcium hydroxide and boric acid, is solvent with water, adopts to be easy to the free of contamination hydrothermal method reaction of industrialization; Form boracic acid potassium calcium double salt by dissolving, hydration and the dehydration in the hydro-thermal medium of Repone K, calcium hydroxide and boric acid.
The method of aforesaid hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system, the mixed solution of its Repone K, calcium hydroxide, boric acid and water moves in the closed reactor, heats up 150 ℃～300 ℃, pressurizes 10～24 hours.
Advantage of the present invention and effect are:
1. raw material of the present invention is behind the water-heat process of dissolving, hydration and dehydration, and cooling is filtered, drying, and its filtrate can be returned technological cycle and use.Raw material is made full use of, cut the waste.
2. whole technology zero release of the present invention does not cause secondary pollution, is free of contamination chemical industry technology.
Description of drawings
Accompanying drawing is a technological process block-diagram of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings.
Ultimate principle of the present invention
Boracic acid potassium calcium { K
2Ca[B
4O
5(OH)
4]
2.8H
2O} does not but exist as the crystal functional materials occurring in nature with specific physical performance.The rule selective chlorination potassium, calcium hydroxide and the boric acid that cooperate with alkaline-earth metal according to basic metal are raw material, with water is solvent, at a certain temperature, form boracic acid potassium calcium double salt by dissolving, hydration and the dehydration in the hydro-thermal medium of Repone K, calcium hydroxide and boric acid.
General planning of the present invention
The present invention is a raw material with basic metal sylvite Repone K and alkaline-earth metal calcium salt calcium hydroxide, dissolves in the aqueous solution with boric acid, the water-heat process of hydration and dehydration, and cooled and filtered, drying obtains boracic acid potassium calcium double salt.Filtrate is returned technological cycle and is used.
Technological method of the present invention
This project adopts hydrothermal synthesis method to obtain boracic acid potassium calcium double salt.Mother liquor returns complete processing.The reaction process zero leakage is the green reaction process.
Embodiment
The boric acid that takes by weighing a certain amount of (660 gram) is added to wiring solution-forming in the deionized water, then calcium hydroxide (100 gram) is slowly added in the boric acid solution, stirs and makes it dissolving.Repone K (200 gram) is added in the solution in batches and disperses.With the solution high-speed stirring, solution clarification dissolving is mixed, then solution is moved in the closed reactor, (150 ℃～300 ℃) pressurization 10～24 hours that heats up, cooling is filtered, and carries out drying, obtains boracic acid potassium calcium double salt.
Claims (1)
1. the method for hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system is characterized in that this method is a raw material with Repone K, calcium hydroxide and boric acid, is solvent with water, adopts the hydrothermal method reaction; Form boracic acid potassium calcium double salt by dissolving, hydration and the dehydration in the hydro-thermal medium of Repone K, calcium hydroxide and boric acid, wherein the mixed solution of Repone K, calcium hydroxide, boric acid and water is moved in the closed reactor during hydro-thermal reaction, heat up 150 ℃～300 ℃, pressurizeed 10～24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100111485A CN100475697C (en) | 2007-04-29 | 2007-04-29 | Method for hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100111485A CN100475697C (en) | 2007-04-29 | 2007-04-29 | Method for hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101041440A CN101041440A (en) | 2007-09-26 |
| CN100475697C true CN100475697C (en) | 2009-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100111485A Expired - Fee Related CN100475697C (en) | 2007-04-29 | 2007-04-29 | Method for hydrothermal synthesizing boracic acid potassium calcium double salt by six-membered system |
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| CN (1) | CN100475697C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154693A (en) * | 2011-03-29 | 2011-08-17 | 沈阳化工大学 | Preparation method of rare earth cerium-doped boric acid potassium calcium optical crystal |
| CN106986350A (en) * | 2017-03-30 | 2017-07-28 | 广东工业大学 | A kind of double salt Boratex ammonium and preparation method thereof |
| CN112505816B (en) * | 2020-11-30 | 2022-03-25 | 中国科学院新疆理化技术研究所 | Compound potassium barium borate, potassium barium borate birefringent crystal, preparation method and application |
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2007
- 2007-04-29 CN CNB2007100111485A patent/CN100475697C/en not_active Expired - Fee Related
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| CN101041440A (en) | 2007-09-26 |
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